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Патент USA US3032172

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May 1, 1962
w. FLIEG
3,032,163
DATA RECORDER AND ASSOCIATED METHODS
Filed Nov. 14, 1960
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INVEN TOR.
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May 1, 1962
w. FLlEG
3,032,163
DATA RECORDER AND ASSOCIATED METHODS
Filed Nov. 14, 1960
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May 1, 1962
w. FLIEG
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DATA RECORDER AND ASSOCIATED METHODS
Filed Nov. 14, 1960
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May 1, 1962
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DATA RECORDER AND ASSOCIATED METHODS
Filed Nov. 14, 1960
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United States Patent O?ice
1
3,032,163
Patented May 1, 1962
2
description of a preferred embodiment as illustrated in
3,032,163
the accompanying drawing in which:
DATA RECORDER AND ASSOCIATED METHODS
FIGURE 1 is a diagrammatic view of one embodiment
Werner Flieg, Brookline, Mass, assignor to Invac
Corporation, Naticlr, Mass.
Filed Nov. 14, 1960, Ser. No. 69,220
28 Claims. (Cl. 197-15)
of the invention;
FIGURE 2 is a pictorial view of a conventional type
writer illustrating how the same may be physically
adapted to incorporate the provisions of the invention;
This invention relates to data recorders and to methods
associated therewith. This application is a continuation
FIGURES illustrates a punched paper tape as proc
essed by the apparatus of the invention;
in-part of application Ser. No. 4,781, ?led Jan. 26, 1960 10
(now abandoned).
In many data processing problems there is a need for
storing or recording data. This type of operation is gen
erally effected by the use of a code and more particu
FIGURE 4 illustrates a light source and photo-sensi
tive cell employed in accordance with the invention;
FIGURE 5 is a top view of the structure illustrated in
FIG. 4;
FIGURE 6 illustrates the adaptation of a portion of a
larly by such means as punched paper tapes, magnetic 15 typewriter in accordance with the provisions of the in
tapes, cards and so forth.
vention;
It is an object of the invention to provide commercially
practical apparatus suited to the above-indicated purposes
FIG. 6;
and furthermore, of lower cost to the consumer than
currently available apparatus.
It is a further object of the invention to avoid the use
of complex mechanical matrices or the like which are
employed in conventional data recorders such as tape
punches.
FIGURE 7 is a front view of the structure illustrated in
FIGURE 8 illustrates a modi?cation of the structure in
20 FIGS. 6 and 7;
FIGURE 9 illustrates the element which is added to
conventional typewriters, particularly to achieve the struc
ture of FIG. 6;
FIGURE 10 illustrates in front view and diagrammat
Still another object of the invention is to provide for 25 cally a portion of a conventional typewriter, the move
adapting presently available types of apparatus, such as
ment of which is correlated to coding provisions of the
typewriters, for tape punching operations.
In accordance with one embodiment of the invention,
the type bars of a conventional typewriter are provided
invention;
FIGURE 11 is a diagrammatic top view of the structure
with coded masking elements operatively associated with
illustrated in FIG. 10;
FIGURE 12 is a side view of a typewriter, diagram
a photo-sensitive unit for inspecting these elements and
controlling a device for punching a paper tape. Special
provision is available in accordance with a feature of
the invention to provide for separate coding of upper and
provided in accordance with the invention to serve in
lower case characters if desired.
In accordance with a preferred embodiment of the in
vention, however, a photoelectric system is installed be
neath the keyboard of a typewriter in such a manner as
to avoid interference, in any way, with the operation of
the typewriter or with the visibility of the typed data.
According to one feature of the preferred ?embodiment
of the invention the typewriter and photoelectric system
matically shown, incorporating a photoelectric system
combination with the typewriter as a control for a data
recorder;
FIGURE 13 is a front view of a portion of the appara
tus illustrated in FIG. 12, showing particularly the front
of the photoelectric system;
FIGURE 14 is a top plan view of the photoelectric sys
tern of the apparatus of FIG. 12, the apparatus being par
tially broken away to expose said photoelectric system;
FIGURE 15 is a top plan view partially broken away
and partially in section of a light source to be employed
in the photoelectric system of the apparatus of FIG. 12;
FIGURE 16 illustrates a detail of FIG. 15 in side view;
According to another feature of the preferred embodi 45
FIGURE 17 is a top plan view of a detail of the photo
electric system of FIG. 12 wherein provision is made for
ment of the invention, the photoelectric system is shielded
in order to prevent the entry of foreign matter and am
light transmission and for coded masking members opera
bient light.
tive in connection therewith;
A further feature of the preferred embodiment of the
FIGURE 18 is a front view of the detail of FIG. 17;
invention relates to the particular spatial relationship of '
FIGURE 19 is a side view of the detail of FIG. 17;
the typewriter keyboard and associated photoelectric sys?
FIGURE 20 is a top plan view of a detail employed
tem, which relationship provides for facile and et?n'cient
with the structure illustrated in FIGS. 17-19;
are provided as detachable units to facilitate the main
tenance thereof.
operation of the photoelectric system.
Still another feature is the e?icient use which the pre~
ferred embodiment makes of the kinetic energy and
momentum of a typing stroke.
A particularly important feature of the preferred em
bodiment is the provision of separate light or radiated
energy channels for the elements of a code in order to
prevent ?cross-talk? and in order to permit the use of
FIGURE 21 is a front view of a further detail em
ployed with the apparatus of FIGS. 17-19;
FIGURE 22 is a front view of a further detail em
ployed in association with the photoelectric system of
FIG. 12;
FIGURE 23 is a top View of the structure illustrated
in FIG. 22; and
FIGURE 24 illustrates a masking member or element
relatively low-magnitude light sources.
employed in accordance with the invention and adapted
Another feature of the invention relates to the pro
vision of a unit which is relatively insensitive to manu
for being coded for use in the structure of FIG. 12.
In FIG. 1 a paper tape 29 supported on a punch die
facturing tolerances.
Still another feature of the invention relates to the
simplicity of the elements which are incorporated into
available apparatus for adapting the same.
Other objects and features of the invention as well as
advantages thereof will be found in the following detailed
22 is selectively punched by means of pins 24, of which
only pins 24a and 24b are shown. The tape is stepped
or driven past pins 24 by a conventional sprocket wheel
member 26 provided with peripheral teeth 28.
Pins 24a and 24!) are respectively controlled by sole
noids or electromagnetic devices 36a and 30b and sole
3,032,168
3
noids 30 are, in turn, controlled in accordance with the
provisions of the invention.
At 32 is illustrated a type ?bar of a conventional type
writer. This type bar 32 is mounted on ?a lever 34 pivot
4
FIG. 3 illustrates tape 20 provided conventionally with
a row of small sprocket holes 84 and with'a number'of
larger holes 86 which are punched by pins 24.
In the
most generally employed commercial arrangement pins
ally supported on pivot 36 and actuated through the
?24 will be arranged transverse to the longitudinal direc
intermediary of a lever 38 by means of an operating key
tion of tape 20 and when the tape is stepped sequential
40. On the e?ective face of type bar 32 is provided a
code groups will be punched into the tape. It will be
raised section 42 constituting a character. Two charac
appreciated that the punching of holes in a paper tape is
ters 42 may be provided if desired.
one speci?c form of an operation which may hereinafter
The above structure is of a conventional nature and the 10 be particularly designated as establishing indicia on a
details required therefore will be apparent to those skilled
record medium.
in the art.
FIGS. 4 and 5 illustrate a speci?c form which the unit
However, in accordance with one embodiment of the
44 of FIG. 1 may take. In FIGS. 4 and 5 are illustrated
invention, there is additionally provided a unit 44 com
housing sections 83 and 90. Section 90 is provided with
prising a source of radiated energy and means responsive 15 a vertical bore 92 within which is accommodated an elon
to this radiated energy. As will ?be shown, the position
gated incandescent bulb 94. This bulb constitutes a
ing of a masking device between said source and the
source of light common to all of the photo-sensitive ele
means responsive thereto in accordance with the opera
ments employed.
tion of the typewriter controls the punching of tape 20.
Section 88 is provided with a plurality of transverse
More particularly, there is provided a housing 46 in
bores 96, one for each photo-sensitive element incorpo
ternally accommodating a light source or incandescent
rated into the unit. Photo diodes 98 are shownaccom
bulb 48 adapted to radiate light through opening 50. A
modated in these transverse bores with the lenses 100
power source 52 provides the necessary electrical power
directed toward light source 94.
for operating this bulb. Opposed to the light source 48
Instead of the separate sections indicated in FIGS. 1
is a housing 54 within which are accommodated a plural~ 25 and 2, the unit of FIGS. 4 and 5 is provided with a slot
ity of photo-sensitive elements 56, the number of which
102 which accommodates the plates on the type bars
depends upon the code being employed with respect to
associated therewith. At the rearmost extremity of slot
punching the tape 20.
102 is provided a resilient pad 104 of rubber or the
Preferably, the photo-sensitive elements 56 are hermet
like which absorbs the impact of the penetrating plate,
ically sealed-in-glass high-sensitivity junction photo diodes 30 should the plate physically engage the unit.
?having a built-in lens which focuses light on the sensitive
A single bracket 166 may be employed ?to support
portion of the junction. A commercially available photo
the above-described unit in place of the separate brackets
diode is Sylvania type 1N77A.
The photo-sensitive elements 56 are employed to con
trol a DC. voltage provided by a voltage source 58 and
80 and 82 of FIG. 2.
Each photo diode 98 is provided with a pair of leads
1618 and lit) respectively adapted for connection to the
above-noted power source and to one of the ampli?ers
an interruption of the light radiated by incandescent bulb
43 with respect to elements 56 will give rise to pulses or
associated with the punch mechanism.
voltage changes which are employed to operate solenoids
FIGS. 6 and 7 illustrate in greater detail the manner of
3i?? and sprocket wheel 26.
adapting a typewriter in accordance with the provisions
4.0
By reason of the low magnitude of the pulses or signals
of the invention. ?Lever 112 of conventional shape has
enerated by elements 56, ampli?ers dim-c are employed.
mounted at its upper extremity a type bar 114 on which
These ampli?ers may be conventional D.C. ampli?ers
are positioned characters 116 and 118. Character 116
which suitably magnify the amplitude of the signals gen
as shown in FIG. 7 is the upper case character whereas
erated by elements 56.
character 118 is the lower case character.
The operations of pins 2-4 and sprocket wheel 26 are
A plate 120 is integral with or otherwise ?rmly and
staggered or sequenced. Thus pins 24 selectively punch
rigidly engaged with lever 112 by means of rivets 122
tape 29, whereafter the tape 20 is stepped to the next
and 124 or the like. Preferably plate 120 is of a rigid
position by ?means of sprocket wheel 26. To provide for
material such as a metal which is readily machined to
this sequencing of operations, a conventional delay de
provide notches 126, the purpose of which has been in
vice 62 is provided in series with ampli?er 600 so that
dicated above. As seen in FIG. 7, plate i120 is of mini
the signal actuating sprocket wheel 2a?: is delayed with
respect to the signal actuating pins 24.
mum thickness so as to facilitate the penetration thereof
into slot 102 illustrated in FIGS. 4 and 5.
On type bar 32 is mounted a masking element or plate
HG. 8 illustrates a modi?cation of the structures
64. Plate 64 is rigidly connected with type bar 32 and
shown in FIGS. 6 and 7. In this modi?cation notches 123
moves with the latter in the direction indicated by arrow 55 are provided directly 'in lever 130 upon which is mounted,
in conventional position, a type bar 132. ?For this type
'66 to a position between light source 48 and light-sensi
of unit in which the masking member is positioned be
tive elements 56. Plate 64 is provided with openings 68
according to a predetermined code so that elements 56
low the type bar 132, it is necessary to relocate the ele
are selectively shielded from light source 48 in accord
ments 46 and 54, ?which, in FIG. 2, are illustrated in posi
tion for operation. of the structure of FIGS. 6 and 7.
ance with which of the masking elements 76 is between
the openings 63. Each type bar 32 is provided with one
FIG. 9 illustrates the simple element which, in accord
or more respective characters 42 which are correlated
ance with the ?rst embodiment of the invention, is added
to the conventional type bar of a typewriter to adapt
with the code of the openings provided on plate 64.
FIG. 2 illustrates a conventional typewriter 72 pro
the same to the purposes of the invention. It is sui?cient.
to note that elongated notches 134 are actually arranged
vided with keys 74 equivalent to key =40 in FIG. 1.
as two sets of notches respectively corresponding to up
Typewriter 72 is moreover provided with a roll or platen
76 around which a sheet 78 of paper is wound for a con
per and lower case characters on the associated type
ventional typing operation. Elements 46 and 54 are
bar. This feature of the invention will be further dis
mounted in position by brackets 89 and 82, these brackets 70 cussed below.
being located upon a stationary portion of the typewriter.
In conventional typewriters, provision is generally
A plate .64 is shown in FIG. 2 positioned between mem
made for employing upper and lower case characters se
lectively by mounting the type bars on a displaceable type
bers 46 and 54 for the control of a tape punching oper
ation. Also illustrated in FIG. 2 are a plurality of
lovers '34 arranged in conventional manner.
bar carrier segment. The structure for such an arrange
ment is diagrammatically illustrated in FIGS. 10' and 11;
(0
5
3,082,163
6
In FIGS. 10 and 11 is shown a displaceable segment
In general this apparatus may be regarded as compris
1-36 supported through the intermediary of balls 138
between ?xed supports 140 and 142. An inspection of
ing a typewriter including displaceable type bars and
levers operatively coupled to these type bars for displac
ing the same, with keys being provided on the levers for
this arrangement will reveal that the segment 136 is
thus capable of vertical displacement. Lines 144.1 indicate
the positions of the various levers supported on segment
136 when the associated type bars are projected up
wardly to position 146.
actuating these levers in order to operate the type bars
and to perform an auxiliary function, as will next be
indicated.
According to the invention there is provided a source
of radiated energy such as light and a plurality of de
vices responsive to this radiated energy. The devices
are operatively disposed with respect to the source, but
are spaced therefrom. Furthermore, in accordance with
Connected to segment 136 is a displacement lever 148
pivoted on pivot 159 and accommodated by a key 152.
Key 152 is the ?shift? key available on conventional type
writers. A depressing of this key displaces segment 136
relative to the associated platen and therefore shifts
the upper and lower case characters relative to the platen
the invention there are provided, as indicated with re
spect to the previously described embodiment of the in
so that one or the other of these characters is typed 15 vention, a plurality of masking elements adapted for
during the associated typing operation.
selectively masking the devices from the source of radi
ated energy.
The vertical displacement which segment 136 is
capable of undergoing is determinable. In accordance
with the invention it is therefore possible to intersperse
The masking elements are operatively disposed with
respect to the levers and are rendered effective thereby
when the levers are actuated by the keys.
two sets of notches 134, as illustrated in FIG. 9, to
correspond to upper and lower case characters.
In further accordance with the invention, recording
'
More particularly, numerals 1 to 7 (upper) in FIG. 9
indicate positions on the plate in FIG. 9 opposed to the
photo-sensitive elements of ?FIG. 4 when segment 136
(FIGS. 10 and 11) is positioned for upper case. Nu
merals 1 to 7 (lower) in FIG. 9 illustrate the positions of
said plate for lower case. These positions are inter
spersed for the respective cases and it is thus possible
elements, such as paper punches, are coupled to and actu
ated by the devices which are responsive to the radiated
energy, as controlled by the selective exposure of the de
' vices to the source of radiated energy.
on the same plate to provide two separate codes which
Viewed according to a different aspect of the inven
tion, there is provided a control for a data recorder, in
cluding a plurality of recording elements. This control
comprises, on the one hand, a photoelectric unit, and, on
may be different, if desired, for controlling the punch 30 the other hand, a typewriter which constitutes a complete
and operative unit independently of the photoelectric unit.
ing of the associated tape.
The above-noted photoelectric unit includes a light
FIG. 9 illustrates the case in which the same code is
source and a plurality of light-sensitive elements spaced
employed for upper and lower case characters, posi
from the source and corresponding to the recording ele
tions 1, 2, 3 and 7 being notched for the uppercase
characters and the same positions being notched for the 35 ments of the data recorder. The light-sensitive elements
are adapted for connection to the recording elements for
lower case characters.
controlling the same. The photoelectric unit, moreover,
In accordance with the invention the positions for
includes masking elements displaceable to positions be
each case are spaced by an amount which is not an
tween the source and light-sensitive elements for selec
integral sub-multiple of the displacement of which seg
40 tively masking these light-sensitive elements.
ment 136 is capable. This means that the positions
The typewriter of the above-noted control includes key
of the respective cases are displaced from one another
levers disposed to engage and displace the masking ele
and permits these positions to be interspersed. This con
ments and type bars operatively associated with these key
stitutes a further feature of the invention.
levers. The masking elements of the photoelectric unit
In operation, the photo-sensitive elements described
have a coded con?guration corresponding with the asso
above are masked or not, according to which typewriter
ciated type bars in order to selectively mask the light
key is depressed, and the masking of the elements pro
sensitive elements from the light source for selective
vides the selective operation of the solenoids and thus a
shielding of the light-sensitive elements, according to the
selective punching of the tape. As has been mentioned
above, a delay is provided with respect to the signal 50 characters on the type bars.
Referring next to the drawing, and particularly to
applied to the sprocket wheel means employed for step?
FIGS. 12-14, there is illustrated in these ?gures, by the
ping the tape. It is also possible to drive the sprocket
use of dot-dash lines and in diagrammatical form a type
wheel device from the signal which is generated when
writer 154.
the masking element is removed from the photo-sensitive
This typewriter comprises, in conventional arrange
unit. This signal is inherently later than the signal gen~ 55
ment, a platen 155 and key levers 158, with which are
erated when the masking element penetrates the unit
operatively associated in known manner type bars (not
and thus automatically attends to the delaying of the
shown) on which are positioned raised portions repre?
tape stepping operation.
senting characters to be typed. The typewriter, more
The embodiment of the invention described above by
over, provides for pivotal movement of key levers 158
way of non-limiting example is one speci?c form of an 60 about a pivot axis 160 under control of keys 162. Each
apparatus for processing a record medium, which ap
key lever 158 comprises, also in conventional manner,
paratus comprises a plurality of members for establish
downwardly extending protrusions 164% at a position at
ing indicia on the record medium, means responsive to
which levers 158 extend through a wall portion or
bracket 166.
radiated energy coupled to said members for controlling
The above-indicated typewriter may be of any conven
operation of same, a source of radiated energy opera 65
tional structure and is mounted on a base member 168,
tively disposed with respect to said means, and means
to mask the ?rst said means to control the response
thereof to the source of radiated energy. The preferred
embodiment of the invention will next be described be
70
low.
The preferred embodiment of the invention is illus~
trated in FIGS. rl2~24 and may be regarded, according
to one aspect of the invention, as apparatus for recording
data upon a record medium.
consisting of a steel sheet or the like, by means of which
the typewriter 154 is ?xed relative to an associated photo
electric unit 170, with respect to which the typewriter is
superposed in accordance with a feature of the invention.
More particularly, the typewriter 1.54 is superposed
with respect to the photoelectric unit 170 in such a man
ner that the key levers 158 are operatively disposed with
respect to displaceable members in the photoelectric unit
170 for operative engagement therewith. This operative
3,032,168
7
8
engagement will be disclosed in greater detail herein
ported in cantilever manner on the member 190? by means
of fastening elements 260. Shield 196 cooperates with
guide or shield section 2112 (illustrated in front plan View
in FIG. 21) to form a substantially closed shield unit
member 168 in such a manner that the relative positions
of the typewriter 154 and the unit 171} are ?xed, both the 5 which protects the photoelectric unit 170 from the dele
terious effects of foreign matter, such as debris falling
typewriter 154 and the unit 170 being detachable for
from the typewriter 154. Moreover, this shield unit has
purposes of maintenance and repair, or the like.
the function of protecting the photoelectric unit 170 from
The photoelectric unit 170 consists generally of a light
ambient or stray light which might interfere with the
source unit 172, a unit consisting of light responsive
elements generally designated by the reference numeral 10 proper operation of the unit 170? and would have harm
ful effects with respect to the associated recording ele
174, and a coding section 176. The coding section 176
ments.
selectively masks the light-sensitive elements of unit 174
The guide or shield section 202 illustrated in FIG. 21
from light source 172 for purposes of controlling record
also de?nes a series of slots designated by the reference
ing elements operatively connected with the unit 172 in
a manner which was earlier indicated with reference to 15 numeral 204 and corresponding in position and number
to the slots 128 of the shield section 195.
FIGURE 1.
in addition to serving as a section of a unit protecting
The light source unit 172 is illustrated in greater de
the photoelectric unit from the effects of foreign matter
tail in FIGS. 15 and 16. In these ?gures are illustrated
after. It is for the present, however, sufficient to note
that the photoelectric unit 170 is also ?xed to the base
a vertical support wall 178 and a perforated front
180, provided with a series of aligned openings and
ported relative to the wall 175 by means of spacers
Supported between spacers 1212 is a bulb support
wall
sup
182.
wall
and ambient light, the element 202 serves the additional
purpose of guiding the masking elements employed by
the unit 17d, as will become apparent hereinafter.
Mounted atop the photoelectric unit 170 and parallel
to the channels, 194 of channeled member 190, is the
key interlock guide 206, the function of which is to per
in wall 181} and adapted for supporting a series of in
candescent bulbs 18-6. The number of bulbs 11% corre 25 mit the operation of only one masking element at a time
in response to operation of key levers 158.
sponds to the number of light-sensitive elements in the
Stated otherwise, it is a function of key interlock guide
unit 174 and is correlated to the number of elements
2116 to insure that two masking elements are not operated
employed in the associated code, as has been indicated in
by the simultaneous depressing of two of the keys 162
a general manner above with respect to the ?rst described
such that an improper recording is effected by an im
embodiment of the invention.
proper control of the recording elements associated with
FIGURE 16 indicates generally that spring clips 18%
the unit of FIGS. 12-24.
are employed, both to maintain bulbs 136 in position
To this end the key interlock guide 206 comprises a
and to make electrical contact therewith, a voltage source
shell or bent sheet member 2118, wherein are formed a
being connected to bulbs 1346 in conventional manner.
plurality of slots 216* (see FIGS. 22 and 23) which cor
The coding section 176, which is best seen in FIG. 13,
184, having a series of openings aligned with the openings
is positioned between the light source unit 172 and the
unit 174 and includes a channeled member 1%; which is
best illustrated in FIGS. 17-19.
In FIGS. 17-19 it is seen that the channeled member
190 is a comparatively heavy body which is preferably of
a heat absorbing material such as aluminum or the like.
This plate is provided on its upper side with a number of
parallel slots 192 which are of a width adapted to ac
commodate the masking elements which will be described
hereinafter. Moreover, the number of slots 192 is di?
rectly related to the number of keys and key levers in
cluded in the associated typewriter.
The channeled member 191} is also provided with a
number of parallel channels 194, corresponding in num
her to the number of light bulbs or light producing ele
ments included by the light source unit 172.
Channeled ?member 1%, covered by slotted light shield
195, constitutes ?an important feature of the invention in
association with related members which will be described
hereinafter. The principal functions of the channeled
member 190 are numerous and include providing separate
?and independent channels for each light source and for
each light responsive element in order of prevent ?cross
respond in size and number to the slots 192 of chan
neled member 190.
It will be noted that the key interlock guide 296 is
further provided with a series of steel balls 212. The
size and number of balls 212 is such that the accumulated
spacing. of the same can at most amount to a distance cor
responding to the width of one slot 210. This means
that if one key lever 158 has entered a slot 210, the balls
212 are forced against one another and block the remain?
ing slots 210, thereby preventing entry of a further key
lever and thus preventing an inadvertent control of a
punching operation by two keys 1612 at the same time.
For controllably masking the light responsive elements
from the associated light source in cooperation with the
above described structural features of the structure of the
invention, there are provided a plurality of masking mem~
bers or elements 214 (see also FIG. 24). Masking ele
ments 214 are mounted on a common shaft 216, de?ning
a pivot axis spaced from the. pivot axis 16%)? noted above.
Masking elements 214 are accommodated in the aligned
slots of members 190, 195 and 202 and furthermore in
corresponding slots in front guide member 218 mounted
on base member 168.
Springs 22% are provided for resiliently loading mask
talk? between the channels and light sources and to make
a most efficient use of the light sources by restricting the 60 ing elements or levers 214 and are suitably connected
between extremities 222 of the masking elements 214 and
generated light rays to a given limited path between the
the base member 168. As best seen in FIG. 24, each
source thereof and the element responsive thereto.
masking element 214 is provided with an opening 224
Moreover, the channels 194 replace expensive optical sys
by means of which the masking element isaccomrnodated
tems which might be employed in lieu thereof and permit
relatively low power light sources to be employed. The 65 on shaft 216 (FIG. 12). Moreover, each masking ele
ment is further provided with an upwardly extending pro
channeled member 190 moreover constitutes a heat ab
trusion 226 by means of which the masking element is
sorbing means which provides for heat dissipation and
engaged by the associated downwardly extending protru
therefore avoids the necessity of employing blowers or
the like to remove heat generated in the light source
unit 172.
The shield 195 is illustrated in top plan view in FIG.
20 and is provided with a plurality of parallel slots 198,
corresponding in number and position to the slots 192 of
sion 164 on the corresponding ke-y lever 158.
Most important each masking element comprises a cod
ing section 223 provided with a number of subdivisions
indicated by numbers 1-8 in FIG. ?24. These sections are
selectively removed as illustrated in Table I, to provide for
a selective masking of the light responsive elements from
channeled member 190 (see FIG. 17).
'
A shield 196 in the form of an imperforate sheet is sup 75 the associated light source.
3,032,163
19
Table 1
Remove Sections
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In operation keys 162 of typewriter 164 will be de
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accordance with the operation of keys 1162.
Masking elements 214? will be selectively pivoted about
shaft 216 and will enter the slots 192 of channeled mem
ber 1913. Since the masking elements have been selec
25 tiveiy coded in accordance with the associated characters
on the associated type bars, channels 194 will be selec~
tively blocked and light will not pass from the light source
172 to selected of the light-sensitive elements of the unit
This will cause a selective operation of the asso
ciated recording elements and thus a selective punching
P
___
20 protrusions 226 of masking elements 214 selectively, in
1174.
.
___
writer. In response to operation of keys 162, key levers
158 will be pivoted about pivot axes 16b? and will engage
H
7
from an inspection of FIG. 4 of the ?rst described embodi
ment of the invention, since unit 174 may be similar
10 thereto or may be provided in various other ways which
will be apparent to those skilled in the art. It is also
essential to note that the light-sensitive elements com
prised by unit 174!- are associated with solenoids or elec
tromagnetic units in the manner diagrammatically illus
15 trated in FIG. 1.
pressed in the conventional manner of operating a type
;
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levers 158 from the latter, in order to gain the full bene
?t of the momentum acquired by levers 158 when oper
ated by keys 162. This constitutes an important feature
of the invention which avoids the need for supplying addi
tional manual power for operation of the photoelectric
unit 1'76 provided in accordance with the invention.
The details of light-sensitive unit 1741 will be apparent
)
of a tape in a manner which has already been indicated
in this text.
7
The general aspects of the preferred embodiment of the
invention have been noted above. Attention is, how
35 ever, directed to the fact that this invention provides for
8
7
6
___
___
___
___
1
#
various features which will be next noted hereinunder.
For example, it is to be noted that each key lever 158
The masking element 214 illustrated in FIG. ?12 is one
is mounted for pivotal movement about a pivot axis 160
example of a completed masking element, the blank for
which is spaced from the pivot axis de?ned by shaft 216
which is illustrated in FIG. 24.
supporting masking elements 214. This means that the
In addition to the structure noted ?above the unit fur
typewriter and photoelectric unit can be maintained as
ther comprises, as illustrated in FIG. 12, an angle 230
separate units and that the units can be detached from
which extends upwardly above the masking elements
one another for repair and maintenance, without dis
and limits the upward travel thereof under the in?uence
turbing either of the two independent elements of the over
of springs 220. The angle ?230 is provided with a re 45 all structure.
silient or yieldable member in the form of a rubber pad
Moreover, it will be noted that the masking elements
232, the function of which is to absorb the impact of the
are positioned beneath the key levers 158, so that the
elements 214 when they rise to inactive position.
typewriter 154 can be readily removed from its position
There is a very particular relationship provided between
above the photoelectric unit 176 whereby the latter is
the typewriter 154 and the photoelectric unit 173. More 50 exposed for replacement of the various components as
particularly, this relationship exists between the down~
well as for general maintenance and supervision.
wardly extending protrusion lied on key levers 158 and
In addition attention is again directed to the fact that
the upwardly extending protrusions 22s on the masking
there is provided a channeled member 1% wherein are
elements 214.
provided separate and independent or distinct channels for
Key levers 153 have each an operational stroke having 55 each and every light source and associated light-sensitive
a determinable length of travel equal to the sum of S1
element. This, as noted above, prevents crosstalk be
and S2 (see FIG. 12). Distance S1 is twice distance S2
tween the dit?ferent channels ?and provides for e??icient
and constitutes about two-thirds the operational stroke
use of radiated energy which in turn permits the use of
of each key lever 158.
relatively low-power light sources as well as avoids the
It has been determined that distance S1 constitutes the 60 use of expensive optical systems.
length of free travel of each key lever 158 and that an
A further feature of the invention relates to the pro
operational stroke continues through distance S2 by vir~
vision of a shielded and substantially completely enclosed
tue of the momentum gained while traveling through dis
photoelectric unit, the shield de?ning openings only for
tance S1.
the entry of masking elements and therefore protecting
In order to take full advantage of the momentum gained 65 the above-noted light channels from foreign matter and
by levers 158 during natural operations, and in order to
ambient light.
avoid the necessity for compensating or making other
A further feature of the invention relates to the fact
provisions for operation of masking elements 214, the
that the photoelectric unit thereof can be designed for
upper extremities of upwardly extending protrusions 226
use with any conventional typewriter which is merely
are positioned for engagement by protrusions 164 of key 70 ?xed relative to the associated photoelectric unit by the
levers 158 at approximately the position required for per?
use of a common base such as the base member 163 il
mitting the free travel of key levers 153 in response to
lustrated in FIG. 12.
engagement of the associated keys 162.
The particular relationship of the protrusions 164 and
Stated otherwise, protrusions 226 are spaced by ap
22s is also to be noted in connection with this invention,
proximately two-thirds of the operational strokes of 75 since it not only makes full use of the momentum nor
8
___
___
___
___
___
1
2
7
ll
163
123
that a punching operation is not initiated without an
light permeable and impermeable sections according to a
predetermined code, photoelectrically inspecting said sec
associated typing operation having taken place.
tions as the type bars are operated, and controlling the
mally acquired by key levers 158 but moreover assures
Finally, it is to be noted that provision for upper and
lower case characters is readily enabled in accordance
with the invention. For example, the upper case key
punching of said tape in accordance with the results of
conventionally provided in commercially available type
the inspection.
12. Apparatus for recording data comprising a type
writer including displaceable type bars, levers operative
writers can be employed to generate an electrical signal
ly coupled to said type bars for displacing the same and
keys on said levers for actuating the same; a source of
10 radiated energy, a plurality of devices responsive to said
by unit 174? to control upper or lower case selection.
radiated energy, said devices being operatively disposed
There will now be obvious to those skilled in the art
with respect to said source but spaced therefrom, a plu
many modi?cations and variations of the structure set
which operates in association with the signals generated
rality of masking elements adapted for selectively mask
forth above. These modi?cations and variations will not,
ing said devices from said source and operatively dis
however, depart from the scope of the invention it they
15 posed with respect to and rendered effective by said levers
are de?ned by the following claims:
with the latter actuated by said keys, recording elements
What is claimed is:
coupled to and actuated by said devices in accordance
1. Apparatus for recording data comprising a type
with the selective exposure of the devices to said source,
writer, said typewriter including displaceable type bars
and means pivotally supporting said levers and masking
having thereon spaced characters, a platen, means sup
elements on spaced pivot axes.
porting said bars and platen for relative displacement
13. Apparatus as claimed in claim 12, wherein said
therebetween whereby the spaced characters are selec
masking elements are positioned beneath said levers.
tively rendered effective, and keys connected to the type
14. Apparatus as claimed in claim 13 comprising, be
bars for urging the latter towards said platen along de~
tween said devices and source, means de?ning a separate
terminable converging paths; a source of light radiating
and distinct channel for each device to guide said energy
light transverse to said paths, a plurality of light respon
to the same.
sive members opposed to said source, masking members
15. Apparatus as claimed in claim 14, comprising a
connected to and displaceable with said type bars to posi
shield over the channels, said shield protecting the chan
tions between said source and light responsive members,
nels from foreign matter and ambient energy.
said masking members being adapted to shield selected
16. Apparatus as claimed in claim 15, comprising, on
of said light responsive members according to a prede 3O
each masking element, an upwardly extending protrusion
termined code, and punch elements coupled to and con
for engagement by the associated lever.
trolled by said light responsive members.
2. Apparatus as claimed in claim 1 wherein said mask
ing members each include two sets of masking elements
offset from each other, said means permittin0 a displace
17. Apparatus as claimed in claim 16, comprising a
base member supporting said typewriter, masking elements
and means and ?xing the relative positions of the same.
ment between the bars and platen of a magnitude adapted
18. Apparatus as claimed in claim 17, comprising springs
for the selective alignment of the sets with said light re
coupled to said masking elements and urging the same
sponsive members.
to inactive positions.
3. Apparatus as claimed in claim 1 comprising a
sprocket wheel means operatively associated with said
punch elements and adapted for driving a record medium
past the same, and a further light responsive member
opposed to said source and coupled to said sprocket wheel
means for controlling the same.
4. Apparatus as claimed in claim 3 comprising a delay
means coupling said further light responsive means to
said sprocket wheel means to sequence the operation of
the latter with respect to the operation of said punch
elements.
5. Apparatus as claimed in claim 1 wherein said mask 50
ing members are ilat plates provided with peripheral
notches.
6. Apparatus as claimed in claim 5 wherein said plates
are ?xed to said type bars.
7. Apparatus as claimed in claim 1 comprising a cas
19. Apparatus as claimed in claim 18 comprising yield
able members for engaging the masking elements as the
latter return to inactive position to cushion the same.
20. Apparatus as claimed in claim 19, comprising guides
for said masking elements to guide the displacement of
the same.
21. Apparatus for recording data comprising a type
writer including displaceable type bars, levers operatively
coupled to said type bars for displacing the same and keys
on said levers for actuating the same; a source of radiated
energy, a plurality of devices responsive to said radiated
energy, said devices being operatively disposed with re
spect to said source but spaced therefrom, a plurality of
masking elements adapted for selectively masking said
devices from said source and operatively disposed with
respect to and rendered effective by said levers with the
ing having aligned openings, said light responsive mem
latter actuated by said keys, and recording elements
coupled to and actuated by said devices in accordance
bers being housed in said openings.
with the selective exposure of the devices to said source,
8. Apparatus as claimed in claim 7 wherein said cas
said levers having operational strokes of determinable
length and said masking elements being disposed to be
ing is provided with a slot transverse to said openings,
said casing being positioned so that said slot receives 60 engaged by the associated levers with the latter displaced
said masking members.
9. Apparatus as claimed in claim 8 comprising a re
by about two-thirds of said length.
22. Apparatus as claimed in claim 21, comprising
means for preventing the actuation of more than one mask
silient pad in said slot for the impact of said masking
ing element at a time.
h
members.
23. A control for a data recorder including a plurality
10. For use with a typewriter adapted for multiple data 65
of recording elements, said control comprising a photo
recording purposes, apparatus comprising a type ?oar hav
ing at least one character thereon, a plate connected to
the type bar and provided with at least one opening there
in, means supporting the type bar for movement along a
electric unit including: a light source and a plurality of
light-sensitive elements spaced from said source and cor
responding to said recording elements, said light-sensitive
determinable path, and a light source and photo-sensitive 70 elements being adapted for connection to and for con
cell straddling said path and being in operative associa
trolling said recording elements, and masking elements
tion with each other and with said plate so as to generate
an electrical signal in response to said plate.
'11. A method of punching a paper tape comprising at~
displaceable to positions between said source and light
sensitive elements for selectively masking the latter; and
a typewriter constituting a complete and operative unit
taching to the type bars of a typewriter elements having
independently of said photoelectric unit, said typewriter
3,032,163
13
14
including key levers disposed to engage and displace said
masking elements and type bars operatively associated
with said key levers; said masking elements having a
coded shape corresponding with the associated type bars.
spending members in the other unit, photoelectric means
operatively disposed for being controlled by the members
of said other unit, data recording elements coupled to and
controlled by said means, the latter said members being
individually coded for selectively controlling said record
ing elements, and interlock means operatively disposed
24. A control as claimed in claim 23, comprising a
shield on said photoelectric unit shielding the same from
foreign matter and ambient light.
25. A control as claimed in claim 23, comprising means
de?ning separate and independent channels between said
source and light-sensitive elements.
26. A control for a data recorder, comprising a type
writer including levers displaceable to perform typing op
erations and a substantially completely enclosed photo
electric control means adapted for connection ?to and con
with respect to the members of one of the units to pre
vent displacement of more than one of the latter at a time.
28. Apparatus as claimed in claim 27, wherein said
interlock means is provided with openings to receive and
guide the members which said interlock means controls,
said interlock means comprising a series of balls adjacent
and adapted for blocking said openings and having a
cumulative spacing adapted for accommodating no more
15 than one of the latter said members whereby the entry
trol of said data recorder, said means including displace
able members disposed for engagement by said levers,
of one of said members into one of the openings pre
said levers having operational strokes of a determinable
cludes the entry of additional members into other of the
openings.
length and said displaceable members being spaced from
said levers by about two-thirds of said length.
References Cited in the ?le of this patent
27. Data recording apparatus, comprising independent 20
UNITED STATES PATENTS
units ?xed relative to each other and each including dis
placeable members operatively disposed so that movement
Bush __________________ __ Oct. 8, 1946
2,408,754
of the members of one unit causes movement of corre
2,749,985
Johnson ______________ __ June 12, 1956
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